Harvester-sickle-grinding machine



(No Model.) v 2 Sheets-Sheet 1. J. N. PARKER.

HARVESTER SIGKLE GRINDING MACHINE. No. 350,386. Patented Oct. 5,1886.

' aim (No Model.)

2 Sheet s sheet 2. J. N. PARKER.

HARVESTBR SIOKLE GRINDING MACHINE.

mum ////////////%A Patented Oct. 5, 1886.

z Illlllmmmunllllllmllfllfllllllllllllll UNITED STATES PATENT OFFICE. I

JAMES N. PARKER, on ELKHART, INDIANA.

HARVESTER-SICKLE-GRlNDlNG MACHINE.

SPECIFICATION forming part of Letters Patent No. 350,386, dated October 5, 1886.

Application filed January 26, 1886. Serial No. 189,838.

To all whom, it may concern Be it known that I, JAMES N. PARKER, a citizen of the United States, residing at Elkhart, in the county of Elkhart and State of I ndiana, have invented certain new and useful Improvements in Harvester-Sickle-Grinding Machines; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

Thisinvention relates to machines for grinding reaper and mower knives; and it consists in the novel features of construction more fully hereinafter set forth and claimed.

In the accompanying drawings, Figure 1 is a side view of. a machine constructed in accordance with and adapted to carry out my invention. Fig. 2 is a plan view. Fig. 3 is a section on the line X X of Fig. 2, with the swinging frame and drive wheel removed. Fig. 4- is a plan View of the sickle-holding clamp. Fig. 5 is an enlarged detail view of the cross-head and handle detached. Fig. 6 is a plan view of the cross-hcad-supporting plate.

The standard A,which supports the operating parts of the machine, has an expanded end, A, on which rests a plate, 13, havingia longitudinal slot, B, and a transverse slot, B*, through which and opening in the expanded end of the standard bolts 1) pass to adj ustably secure the parts together. A cross-head,0, is supported on the under side of the plate B by a sliding head, D, traversing on the upper side of the plate. The cross-head and sliding head are held together by a bolt, (1, extending through a fillingblock, O,working in the slot 13 of the plate B. Said block is preferably an integral part of the cross head, and, being slightly thicker than the thickness of the plate B, prevents any binding of the'crosshead in its reciprocating movements. Projecting for- Ward from the cross-head are arms 0 c, joined by aweb, a having lateral flanges 0 A handle, E, havinga kerf, 6, cut in its end ofa width equal the thickness of the web 0 is slipped over the latter between the flanges and secured (No model.)

by a bolt, 6, passing vertically through the web and the parts of the handle 011 each sidethereof. Ashaft or journal, F, projecting through a longitudinal opening in the cross-head, is held therein by a set-screw,f, and pivotally supports aswinging frame, G, by arms 9, extended one 011 each side of the cross-head. The double-coned grinding-roller His journaled between the outer ends, 9, of the frame. The journal of the roller is projected on one side beyond the frame, and has a pinion, h, keyed thereon to mesh with the hand drive gearwheel I, mounted on an extension of the shaft F. A spring, J, secured to the under side of the crosshead by a thumb-screw, j, has its free end arranged to bear on the swinging frame and hold the same down to its work.

In the practical operation of the machine a to-and-fro movement is given to the cross-head by means of the handle E. This movementis limited by set-screwsK K, passing through the ends of the plate B and extending into theslot B. The set-screw K,being very much longer than the set-screw K, has an additional support, L, held within the slot in the plateB by lugs l, to steady and prevent any giving of the screw when struck by the cross-head at the limit of its back motion. The support L is preferably threaded to give greater stability to the screw.

In order to keep the grinding-roller elevated, so that itmay not drop beyond the plane of the knife when it has nearly reached the end of its backward motion, a guard, M, is adj ustably secured to the side of the standard A, preferably to an extension, A This guard has its forward end, m, beveled to facilitate contact between it and the frame. It is longitudinally slotted, as shown at m. Bolts N N, passing through this slot and through the standard or its extension, hold the guard in place. By reason of the slot the guard maybe adjusted in or out to correspond with the position of the swinging frame or the width of the knife to be ground.

In order to give the proper inclination to the beveled end of the guard, it has been found desirable to have the latter vertically adjustable about a pivot or fulcrum. To effect this the bolt .N is relatively fixed, and forms the fulcrum about which the guard turns, while the 2' ssoce bolt N works in a vertical slot, 11, in the standard, to hold the guard when adjusted.

The grinding-roller and its mechanism may be laterally adjusted by reason of the transverse slot in the rear end of the plate B.

The knife-holding clamp consists of a base, 0, and a cap, P. The forward portion of the base is raised and presents two rests, 0, having a central space between them to afford a clear ance for the bulge of the grinding-roller. The cap has two fingers, p, which extend over the rests 0. The rear end of the cap has a longitudinal slot, 1), through which a set-screw, (2, projects to clamp the parts together. son of the slot the cap may be adjusted to and from the raised portion or rests of the base to accommodate cutter-bars of different widths.

The machine may be used as an ordinary grinding device by simply inverting the position of the cross-head and the sliding plate relatively to the plate B. In this instance the swinging frame will be above the plate and supported by a transverse bar, Q,when thrown back, as indicated by dotted lines, Fig. 1. To hold the framein this position a lug, q, projecting forward from the bar Q, has a bolt, q',passing through it, and an aperture, q", in the frame.

Having thus fully described my invention, whatI claim as new, and desire to secure by Letters Patent, is-

1. The combination of a standard, a plate projected in a horizontal plane therefrom, a reciprocating cross-head mounted on the plate, set-screws projcctinglengthwise of and in opposite directions from each end of the plate to regulate the movement of the cross-head, a grinding-roller,supporti ng-frame therefor carried bythe cross-head,and mechanism to drive said roller, substantially as described, and for the purpose specified.

2. The combination of a standard, a plate transversely slotted at one end, and having a lateral adjustment on the standard, to which it is secured by bolts passing through the slotted end, a cross-head traversing on the plate, a grinding'roller, supporting-frame therefor carried by the cross-head, and mechanism for imparting a rotary movement to the grindingroller, substantially as set forth.

By ma 3. The combination of the standard, a plate projected horizontally therefrom, a transverse bar secured to the plate, a cross-head invertibl y secured to the pl.ate,a grinding-roller, supporting-frame therefor pivotally supported by the cross-head, and having its free end engaging with the transverse bar and held in position thereby, substantially as sh own and described.

4. The combination of a plate, across-head, a grinding-roller, supportingframe therefor hinged to the cross-head, and a spring secured at one end to the cross-head,and having its free end projected within the path of the frame to contact therewith and keep the roller to its work, substantially as set forth.

5. The combination of a plate, a cross-head traversing thereon, a grinding-roller, supporting-frame therefor hinged to the cross-head, and a guard located within the path of movement of the cross-head to contact with the frame and prevent its dropping when nearing the end of its stroke, substantially as and for the purpose specified.

6. The combination of the standard, a plate projected horizontally therefrom, a cross-head traversing on the plate, adj nstable stops to limit the movement of the cross-head, a guard adjustably secured to the standard,a grindingroller, and a supporting-frame therefor hinged to the cross-head and adapted to contact with the guard near the end ofits backward move ment, substantially as and for the purpose set forth.

7. The combination of the standard, a plate extend-ed horizontally therefrom, a cross-head traversing on the plate, a swinging frame can rying a grinding-roller and supported by the cross-head, a slotted guard secured to the stand ard by a bolt passing through theslot in the guard, and a second bolt passing through the slot and a vertical slot in the standard to pivotally adjust the guard about the first bolt, as and for the purposes set forth.

In testimony whereofI affix my signature in presence of two witnesses.

JAMES N. PARKER. Witnesses:

JOHN B. STEPHENS, J. 0. Evans. 

